Educational device.



L. L! MOULTON. EDUCATIONAL DEVICE.

ABPLIOATIQMBILB?) JULY 19, 191s.

Patented 0013.18, 1914.

Tuve-1715074 Lazzi/e L Mow'on, /M/ f/ r.

wif/66666: fw 46M Maw@ Q ZZ THE NURRIS PETERS CO., PHOTU-LITHO.. v/AsHlNGTaN. D. C.

` member LIzzIE 1..,"1vronirron, ork Boston, MASSACHUSETTS.

EDUCATIONAL nEvIcE.

Specification of Letters Patent,

Patented oet. 13, 1914.

Appneanon sled .nay `1e, 191s. sena; No. 779,944.

T0 all 'whom it may concern.' Be it -known that I, LIZZIE L. Moor/ron, a citizen of the United States, and resident of Boston, Massachusetts, have invented an Improvement in Educational Devices, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing` like parts. i,

This invention relates t0 educational devices, and more particularly to a device for facilita-ting thev explanation to children of the phases of the calendar. v

'l' he character lof the invention may be best understood'by reference to the following description of an illustrative embodiment thereof shownin the accompanying drawing, wherein: I

Figure 'l is a plan of an illustrative educational device shown herein as embodying the invention; Fig. 2 is a central vertical section through the device shown iny Fig. l;

and Fig. 3 is a detail to be'referred to.

Referring tothe drawing, the illustrative educational device there shown ask embodying the invention comprises a chart on a board of thin wood or other suitable material, said chart comprising concentric elliptic lines l and 3 forming between them a space representing the earths orbit. This space is divided radially into twelve sections reprcsenting the months of the year and having marked thereon the names of the months. Each section may be partly blue and partly gray, `if desired,gsuggestive of the blue and gray skies throughout the.

year. Each of the month sections is divided by graduation marks 5 to represent the days of the month. To indicate or register any selected day a peg 7 or other appropriate may be provided having a head thereon in the form of a ball representing the earth. This earth ball may be inserted progressively in holes 9 in the chart board corresponding with the days graduations. Centrally within the earths orbit is located a disk-like member 11, preferably yellow in color, representing the sun. By the relative arrangement of the earth ball and sun the idea of the travel ofthe earth in an elliptical orbit about the sun is forcibly impressed upon the childs mind.

To enable the child to readily understand the division of the months of the year into seasons, a disk or member 13 of thin wood or other material is provided within the inmemlber' I being divided into bounding the the lines marking the commencement of ner ellipse line of the earths orbit, said four segments preferably chromatically differentiated from one another to represent the seasons. convenient selection of appropriate colors for this purpose comprises-green, suggestive of the verdant character of the yspring months; red, suggestive of the hot summer months; yellow, suggestive of the fading vegetation ofthe fall months; and white, suggestive of the snow-covered ground characteristic of thewinter months.

1n order to impress upon the mind of the child the duration of the respective seasons,

the season segments are coextensivewith the sections comprising the months included in ne seasons. More specifically, the vlines spring segment register with `March and the endv of May; the lines bounding vthe summer segment register with the l lines markingthe commencement ofv June and end` of August; the linesfmairking the boundaries of the. autumn Asegment register with the. lines marking lthe commencement ef'ieptember and end of November; and the lines marking vthe boundaries' of the winter segment are of an extent sulicientto regis- `ter with the lines' marking the commencementof December and .end ofFebruary.

lllhile the months of March, April `and li/lay are regarded as the spring months, yet

from a strict astronomical point of view the spring Aseason does not commence on the rst of liiarchand end ony the first of J une, but commences on the 21st of March and ends on the 21st of June. In order to make this clear to the child the central'season representing member is made adjustable s0 that segment thereof may be moved to bring its boundaries into registration .with the day graduations corresponding to March 21st and June 21st. Similarly the summer, autumn and winter segments are at the same time l adjusted to graduations marking of said seasons.

It will bey observed that the portion of the season segment member visible within the inner orbit line is ellipticale If this elliptical member fitted into an oval aperture formed by the inner line of the orbit, obviously it could not receive the rotative adthe exact boundaries justment described. To enable it to have this rotative adjustment it may be on va portion of the disk 13, the latter being convenregister with the dayl iently seated in a counter-bore l5 on the under face of the chart board. This disk may be retained in this counter-bore by a base strip 17 of thin Wood veneer or other suitable material glued or otherwise securedV to ythe chart board. rEhe disk is placed in said counter-bore with va fit appropriate to permit the ready adjustment thereoi1 by applying the hand to the upper face thereof and imparting a rotative movement thereto.

It is a Well known fact that objects make a more forcible impression on a childs mind .than mere Words. lThe educational device described constitutes an objective representation oi' phases of the calendar vand as a result materially assists in enabling the child to understand and remember the same.

It is to be understood that the particular embodiment of the invention described herein is selected for purposes of illustration and that the invention might be variously embodied Without departing from the spirit and scope thereof.

v 7h-at l claim as new and desire to secure by Letters Patent is:

l. An educational device comprising, in combination, a chart having the earths 0i'- bit marked thereon; graduations dividing said orbit into sections representing the months oi' the year and days of the months; and an adjustable member cooperating with said orbit divided into segments representing the seasons of the yearl and movable to bring said `season segments into registration with the month sections'comprising the different seasons and into `registration With the days gi'adiiations marking the astronomical `commencement and close oil the seasons.

2. nn educational device comprising, iny

combination, a chart having the earths orbit marked thereon; graduations dividing said orbit into sections representing the ylatter may be moved months of the year and days of the month; and an adjustable member divided into segments chroinatically differentiated from one another graphically to represent the seasons of the year and movable to bring said season segments into registration With the months sections comprising the diierent seasons and into registration With the days graduations marking the astronomical commencement and close of the seasons.

An educational device comprising, in combination, a chart provided with a portion having the earths orbit marked thereon; graduations dividing said orbit into sections -iepresenting the months oi' the year and days of the month, an adjustable member filling a central opening in said chart and divided into segments representing the seasons of the year; and means providing a pivotal support for said member whereby the to bring said season segments into registration with the months sections comprising the different seasons and into registration With the days graduations marking the astronomical commencement and close of the seasons.

a. An educational device comprising, in combination, a chart vhaving the earthis orbit marked thereon; graduations dividing nid orbit into sections representing the monthsy of the year; graduations for said month sections representing the days of the month; and an index element adapted to be placed in any of a series oi' holes on said orbit corresponding to the days graduations.

In testimony whereof, l -have signed my iame to lthis specification, in the presence of tivo subscribing witnesses.

' LIZZIE L. MGULTON.

' lVitnesses:

.JOHN R. MoULroN, j 'HENRY T. lViLLiAMs. l

vCopies ofthis patent may be obtained for ve cents each, Vby addressing .the commissioner of latents,

' Washington,'D. C 

